Part of why I gave up sci-fi cons is the ridiculous infestation of hateful liberals.
First time iI became aware of it was at a Con in 1981 when I mentioned casually to a friend that I had voted for Reagan...my friend went ballistic and never spoke to me again.
THEN he told other people in the hotel and I spent the rest of the weekend justifying myself.
I also used to go to sci fi cons a lot - last one I went to, I got in trouble for being a Rush listener and will never forget that. Those folks had tolerance for every possible political belief, spiritual way, sexual orientation, etc. - as long as it wasn't Christian and/or Republican!